there's a classic example i think going back to 2007 of john mccain talking about osama bin laden. i want to play that for our viewers. >> another painful one. >> on the subject of osama bin laden, he's responsible for the deaths of thousands of innocent americans. he is now orchestrating other attacks on the united states of america. we will do whatever is necessary, we will track him down, we will capture, we will bring him to justice and i will follow him to the gates of hell. >> okay. >> oh, god. >> there was like a smile. >> that was really hard to watch. yes. so that's a sort of nonverbal -- it's a mismatch between what the person is saying and what their nonverbals are saying, or between nonverbals. when you're saying something negative that you will follow someone to the gates of hell, you shouldn't be smiling. it creates i think a visceral negative response in viewers. they don't even know why but it makes them feel bad. it's very aversive to see that kind of thing. >> there have been reports the romney team have been preparing zingers for tomorrow night's debate. you say